Security bug: nothing-at-stake for tokens - no ERC-721 value anymore attack

[vporton]

We have an attack on PoS Ethereum: attack any token(s) in the same way as ETH could be attacked by the same way as the well-known nothing-at-stake attack.

The first method of NAS protection from https://eth.wiki/en/concepts/proof-of-stake-faqs does not work for this, because the value of a token may be unknown or even highly different in two forks.

The second method should work, but...

It does not work for NFTs such as ERC-721, because the value of an NFT can't be split into two parts (it is 1 wei).

Stupid NFT fans, get rid of NFTs!

[vporton]

The protection for non-NFTs (ERC-20 and ERC-1155) can be done this way only by integrating fining token holders into Ethereum core.

That's quite possible to be done if we restrict ourselves only to ERC-20 and ERC-1155 tokens (ERC-20 was a bad idea, it would be better to have only ERC-1155; adding new token types not belonging to these two ERCs makes no sense because ERC-1155 has all features a token could have; people still can create new standards of tokens, but these new (useless) kinds would be liable to the above described attack).

[github-actions]

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[github-actions]

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